Method of and apparatus for treating metal



A. SUNDH.

METHOD OF AND APPARATUS FOR TREATING METAL. APPLICATION FILED NOV, 5, 1920.

I T I R W q E INVENTOR w n) I 3 93f 4 l ATTORNEYS "strips more specifically,

wherein a metal-strip, for example,

. UNITED iSTALTES PATENT OFFICE,

.ntfeus'r SUNDE, 01'

To aH whom it may concern. I

Be it known that I, Auous'r SUNDH, a citizen of the United States, and a resident of Hastings-u on-Hudson, Westchester County, State of ew York, have invented certain new and useful Improvements in Methods of and A paratus for Treating Metal, of which the ollowing is a specification.

This invention relates to an improved method of and apparatus for treating m'etal although theapparatlis is adapted for treating strips of other material as well as for treating metal in forms other than strips.

In general, I have provided an apparatus may be passed through a pickling tankwherein the strip issubjected to the action of a pickle to loosen the scale thereon which has accumulated upon the strip during the anby the strip is subjected to the action of atank-may be removed accumulated upon the strip,

nealin operation, the strip then passing throng a washing unit wherein it is subjected to the combined action of water and scrubbing brushes, the strip being then passed throu h a device wherein and wherevacuum to remove the moisture which has the strip finally passing through a rollin mill if desired to reduce it to the proper t ickness, and thereafter being rolled up into a coil or roll.

By the use of m very rapidly and thoroughly and without necessitating handling of the strip by hand. In addition means have been provided whereby the metal which may be in the pickling therefrom should it be desired to stop the operation of the machine for any length of time, without necessitating the use of hooks or without it being necessary for the workman to handle the strip by hand.

Another object of my'in'vention isto provide an apparatus wherein the strip of metal or other material'is wound u upon a winding drum which is driven y an electric motor of the series type in order-that the increased load upon the motor as the virtual diameter of the coil ofstrip-upon the wind- Specification of Letters Patent. Application filed November 5, 1920. Serial improved apparatus metal strips particu arly may be cleaned to b nasrmes uron-nunson, rmw Yonpj y unrnonor Ann mnnarus roa TREATING mama.

Patented Apr. 18, 1922. No. 421,a11.

' automatically slow down so as to maintain the tension on the strip of metal or other material being operated upon to remain practically constant.

In the drawings accompanying this application,-

Fig. .1 shows my sectional elevation; F ig, 2 is a washing the jecting the strip to a reduclng the thickness winding drum; and

strip, the apparatus for sub-' vacuum, the mill for of the strip and the Fig; 3 is an elevation taken at the line 33 of Fig. 1;

' Referring to the drawings in detail, 1 designates a supporting frame provided with slots 2 for receiving a mandrel or mandrels 3 u on which the metal 4 being treated is coi ed. 5 designates a pickling tank containing pickle 6 for loosening the scale and dirt uponthe strip or strips 4. Supported at each end of the ickling tank 5 are arms 7, a pair at each end which aims support rollers 8, 9, 10 and 11 about which the strip/1 passes as it" traverses the tank. The levers 12 are adapted to raise the arms 7 and the rollers carried thereby as well as the strip traversing the pickling tank at any time out of the pickle if ;it;b e' desired to shut the machine down for-any reason what.-

soeverf At each end of the pickling tank I- provide rollers 13 over which the strip 4 passes in travelling to the tank and in pass ing'out of the tank. Ad'acent the end-of the pickling tank I provi e a washing tank 15 containing water 14 and a pair of. scrubbing brushes 16 between which the strip 4 passes in going through the machine. Below the level of the water 14, I providea roll or roll's 17 about which the strip passes. The discharge end of this washingtank carries a roller 18 about which the strip passes as it moves forward to the next step in the operation of the machine. brushes 16 just mentioned are dr ven by an electric motor 19 operatively connected therea worm andworm wheel 20 and 21, the rushes being geared to each other by gears 22' and 23. I

The strip 4 after passing from the washing tank is passed through a vacuum cleanplanvi'ew of the apparatus for,

improved apparatus in I vacuum so that as or block 36 driven by a series woun 37 connected to the drum or block 36 by a pickling and 11 to traverse ing device 24comprising upper and lower vacuum elements 25 and 26. The vacuum cleaning device is connected by pipes 27 and, 28 to an exhauster 29 which is driven b the-motor 19 already referred to and it wi 1 be apparent that as the strip 4 passes between the upper and lower e emerits 25 and 26 otthe vacuum cleanin device the water and moisture carried by t e strip will be removed therefrom by the action of the the strip emerges from the vacuum cleaning device it will be thoroughly dried. The strip then passes to a r0 ling mill designated 30 comprising upper and lower rolls 31 and 32 respectively. This mill is driven by a motor through a gear train 34 and 35.

The strip after passin through the rollin mill 30 and being re uced to the desired thlckness is wound upon a winding drum motor gear train comprising the gears 38 and 39.

ln 0 eration a coil of metal 4 is placed upon t e sipgorting frame 1 and the machine threa e the strip passing from the coil upon the frame 1' over the roller 13 at the left-hand end of the pickling tank of Fig. 1 downwardly under the rollers 9 and 11 around the roller 11' and back through the pickle in the ickling tank to and around the roller 8, beer through the pickle again and around the roller 10. The strip is then led upwardly around the roller 13 at the right hand end of the pickling tank as! viewed in Fig. l and into the washing tank 155. It will be understood, of course, that the brushes 16 at this time are being rotated by the motor 19 and the strip is led between the brushes which are submerged in the'water 14:, downwardly around the roller 17 adjacent the bottom of the washing tank and then upwardl around the r'oller 1.8 atthe discharge end of the tank. The it will be seen, in passing through the tank is caused by the rollers 8, 9, 10 the pickle several times in order that the scale and dirt upon the strip may be thoroughly loosened and that when the strip asses into the washing tank and is subjected t/o the action of the brushes 16 and the water 14 therein, be thorou hly cleaned.

When 51% strip passes from the washing unit into the vacuum cleaning device 24 between the elements 25 and 26 thereof, it is subjected to the action of the vacuum created by the exhauster 29 so as to remove all moisture from the stri resulting in the strip passing to the ro ling millv 30 in a thoroughl dried condition. The strip leaving the ro ling mill is wound upon the drum or block 36 and as the virtual diameter of the strip from this drum increases the drum will be automatically slowed down due to the strip,

the strip will for receiving the meta washing the metal,

naiaere metal upon the drum 36, will remain practn call constant.

at is claimed is: I

1. The method of treatin metal which consists in ickling and was ing the same, drying, ro ing, and finally winding in a C01 2. The method of treating metal which consists in pickling and washing the same, then subjecting the metal to a vacuum to dry the same, thereafter assing the dried metal through a mill to re ace the thickness of the metal, and finally winding the metal in a coil.

3. In an apparatus for treating metal, the combination of picklin and washing means to clean the same, a vacuum apparatus for receivin the metal after the same has been cleaned to remove moisture from the metal, and a drum or block for winding the dried metal in a coil.

t. In an apparatus for treating metal, the combination of means for pickling and washing metal, a vacuum ap aratus for drying the metal, a rolling mil 'for receivin the dried metal and for reducing the thic ness of the same, and a drum for winding the meitlal in a coil as it comes from-the rolling m1 Y 5. In an apparatus for treating metal, the combination of means a vacuum apparatus for drying the metal, a rolling mill for receiv-' ing the metal from the vacuum apparatus and for reducing the metal, a ,winding drum 6. ln an apparatus for treating metal, the combination of means for cleaning metal,

means for drying themetal, said last-named means being in position to receive the metal as it comes from the cleaning means, a rolling mill for receiving the metal from the drying means, a drum for receiving the metal from the rolling mill and winding it into a coil, and means for driving said winding drum, said last-named means being automatically operable to maintain the tension on the metal as it comes from the rolling mill practically constant.

7. ln an apparatus for treating metal, combination of means for cleaning and ing the metal, a winding drum for winding the metal after being so treated into a coil,

the

and means for driving said drum, said means being automatically operable to maintain a coil, anda series wound motor for driving 130 Illll 126 drysaid last-named means, said motor operating automatically to maintain the tension on the metal practically constant. 7

9. The method of treating a metal strip which method consists in cleaning the strip and thereafter passing the same through a vacuum apparatus to dry the strip.

10. In an apparatus for treating metal, the combination of brushes for scrubbing the metal, a vacuum apparatus for receiving the metal. after it, has been operated upon by said brushes, said vacuum apparatus comprising an exhauster and a motor for driving said exhauster and said brushes. 11. In an apparatus for treating metal strips, the combination of means for cleaning the strips, and a plurality of means adapted to receive the strips after the same have been cleaned and to subject the entire strip to the action of a vacuum to dry the same.

12. In an apparatus for. treating metal strips, the combination of means for cleaning the strip comprising a tank for washing liquid through which the strip is drawn and a pair of brushes in said tank between which the strip is drawn, a vacuum apparatus through which the strip is drawn after it has been cleaned and washed, said vacuum apparatus subjecting both sides of the strip to avacuum to dry the same, an exhauster operatively connected to said vacuum apparatus and a motor for driving said exhauster and brushes.

This specification signed this 3rd day of I November, 1920.

AUGUST SUNDH. 

